The Worst Supplements of All Time

Over the last decade, the FDA has recalled hundreds of dietary supplements that have been linked to serious (and even fatal) side effects. Part of the reason these dangerous products continue to make it to market is that they aren't considered foods or drugs, meaning they come with their own set of rules. The agency can institute warnings, bans, and recalls after consumers report problems, but it must rely on manufacturers to operate aboveboard and report new ingredients. There are supplements that have been proven to be safe and effective. These are not those supplements.

Craze Performance Fuel

Driven Sports touted the "seemingly endless energy" customers got from Craze Performance Fuel, but failed to clarify exactly what was providing that boost. That may have had something to do with the fact that the company broke bad and included a secret ingredient, which is pretty much meth. The exact effects of the compound in question (N,a-diethylphenethylamine) aren't entirely clear, but amphetamines are known to increase central nervous system activity, heart rate, and blood pressure, and can lead to cardiac arrest. Soon after yanking Craze, the feds reported they had also discovered a meth-like compound in nine other supplements but haven't issued a warning yet or named the products.